A Liquid Problem

Q. Famous scientist Setu Sadan had established his laboratory on an isolated island for quite some years now. He had been experimenting to find out a liquid which would dissolve anything and everything.
One day his assistant, Dr Shanti Raman told him jubilantly that he had been successful in finding the formula for making the desired liquid.

Setu Sadan was delighted but suddenly he appeared sad and disappointed. A complex problem about which he was hitherto unaware tickled him and benumbed his brain.